Jim Harbaughdoesn't believe everything he reads on the Internet, but he does believe what his linebacker wrote on Twitter last week.

Asked about an alleged incident in which Aldon Smithwas reportedly jumped in the early-morning hours Thursday in Columbia, Mo., Harbaugh said Smith told the team the report was inaccurate. Last week, Smith said, via Twitter: "Didn't get jumped_ stop asking."

Harbaugh said Monday, "What Aldon said to us is the same as what he said publicly. ... And you also tend to take a man at his word."

Harbaugh, who said Smith spoke with general manager Trent Baalkelast week, was initially vague when asked about Smith and the alleged incident.

"Well, I, personally, tend not to believe everything I read on the Internet to start with," Harbaugh said.

Asked if that meant he believed the report was false, Harbaugh didn't provide more clarity: "Just exactly how I said it: I tend not to believe everything I read on the Internet."

Smith has been involved in two off-the-field incidents since January, when he was arrested on a DUI charge (later reduced to reckless driving) in Miami Beach. In the early hours of June 30, he sustained minor stab wounds during a party at his house outside San Jose.

The seventh overall pick in the 2011 draft, Smith has 21.5 sacks in his first 24 career games.